File Extension Library


.XMLX File Extension

  • Developer by: Microsoft Corporation
  • Category: Spreadsheet and workbook Files

What are .XMLX files and how to open them?

Can't open .XMLX file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .XMLX file.

What is a .XMLX file extension?

.XMLX file extension is created by Microsoft Corporation. .XMLX has been classified as Spreadsheet and workbook Files.

.XMLX is Excel spreadsheet

The xmlx extension is sometimes used for common Microsoft Excel xlsx spreadsheet.

Excel is a part of Microsoft Office suite for Windows and Mac.

Probably just renamed so it is not associated with Microsoft Excel by default.

.XMLX file format is deprecated and this file format is no longer supported.

Currently, .XMLX file type is not actively used and is obsolete. This usually happens with system files in older operating systems, files from long-discontinued software, or with previous versions of some file types (documents, projects, images, etc.) that were replaced in later versions of the original programs.


How to open:

Rename the file to XLSX and open it with Microsoft Excel.

How to convert:

Use compatible tools to export *.xmlx files to other formats.

How to fix problems with .XMLX files

  1. You need to update the application that you normally use to open .XMLX files. Only the latest version of the software supports the current .XMLX file format
  2. You need to check the .XMLX file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)